merging changes
preparing switch to cplex
now the regression is also done via cplex
dynamic libs shouldn't be in here
framework-side changes to allow for cplex
some small fixes due to new asserts in lazyflow
changed formulation of the optimization problem in the cplex module slightly
cleaned up code, back to using multiple regressors
added capability to use boxes in multiple imagelanes
added serialization of boxes, TODO: now fix liveupdating